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Discussion Starter #1
I've got just over 13k miles on my car and somewhere around 11k miles it developed a slight vibration w/ a subtle noise when pressing the brakes. I thought it went away but I've noticed it again a few times lately when braking hard. Tonight I was watching TheTopher's review of the new V60 on YouTube and he mentioned he's driven a couple new Volvos with vibrating brakes lately, including the XC40. Just curious if anyone else has experienced it.
 

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Motorman409

Here's the deal on mine.
~20,000 km (~12,000 miles) the brakes are vibrating at various speeds. Generally from 70-100 km/hr in a controlled stop.
Went to the dealer (I have a very good dealer - Valentine Volvo) and went for a spin with the shop manager - Bill.
He feels it, (he's a car guy) and thinks it's the rear brakes. In the shop, and the rear rotors (run-out) are way out of spec.
Rear spec is 0.075 mm, they are 0.184 mm. Rotors replaced.
Technician doesn't like the feel, back in the shop (did I mention that this is a good dealership?)
Checked the front run-out, and it's worse.
All four rotors replaced.
Brakes are good since.
 

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Vibrating

Hello Motorman409,
Thank you for your post.
Bought my XC40 on April 17, 2019. I love the car. While driving recently I feel a vibration wasn't sure why or what caused the vibration. Not the first time. After reading your post about the vibration and brakes . I feel maybe the vibration is coming from the brakes? Never had a car do that before. I will be going to the dealer for my plates and I have a list I will add this to the list.
 

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Discussion Starter #4
Yes, thanks for your reply, Motorman409. Appreciate the information. You are fortunate to have access to such a good dealer. I'll start to push mine on this issue.
 

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Hello Motorman409,
Thank you for your post.
Bought my XC40 on April 17, 2019. I love the car. While driving recently I feel a vibration wasn't sure why or what caused the vibration. Not the first time. After reading your post about the vibration and brakes . I feel maybe the vibration is coming from the brakes? Never had a car do that before. I will be going to the dealer for my plates and I have a list I will add this to the list.
Do you feel the vibrations while braking or in general? I have a vibration issue with mine above 65 mph and have taken it to the dealer 4 times now. Not sure what is causing it yet but now the dealership is saying its normal. I have two other cars which are driven on the same roads and I don't feel the vibrations in those cars.
 

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I took mine in for 10,000 mile service and explained to the dealer about a vibration in harder braking. When I went to pick the car up they said they couldn’t work on it because it was raining and they couldn’t duplicate what I described. Lame, really. I tend to think the rotors need resurfacing but I’m pretty sure they won’t do that and would want to replace if there was actually an issue. I’m not hard on my brakes so I’m wondering why they would be doing this at 10,000 miles. It’s unfortunate but I can see that Volvo wouldn’t want to replace rotors every 8,000 to 10,000 miles because it’s an issue. This is not “normal” or at least it shouldn’t be.
 

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Discussion Starter #7
Do you do a lot of gentle driving around town? In newer cars that are engineered and manufactured for longevity, it’s not uncommon that people simply aren’t using their brakes hard enough. In gentle braking at relatively low speeds, there isn’t as much friction between the pads and rotors as they were made to handle. The pads can actually develop a kind of smooth or even extra hardened surface that can lead to poor braking or even rotor damage beyond repair. This Used to be seen frequently on BMWs and Mercedes that were designed for repeated hard braking from high speeds on the autobahn. Seems silly to think you might actually not be hard enough on your car, but it can happen. (For the same reason carbon can build up on engine valves if people are only doing repeated gentle accelerations around town and never really opening the throttle up). If this describes you, it can’t hurt to take that highway day trip you’ve been thinking about and let the car open up a little, and see what happens.
 

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Just took my car to the dealer after the routine service came on.. I mentioned that the brakes seemed rough when braking at higher speeds and asked them to take a look at them. When I picked it up I was told that they would be replacing the rotors, all covered under warranty.
 

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We purchased a 2019 XC40 T5R AWD polestar through the dealer preorder program in Feb '18 with arriving in April'19. It started making strange scrapping/grinding noises intermittently after about 7500mi. It got worse this year with just over 17K mi, so I took it to our local dealer in Athens, GA. Technician first said rear rotors were warped and replaced them, took for a test drive, still noisy so he replaced front rotors. All done under warranty. Brakes smooth and quiet now just like when it was new and like the loaner XC40 we drove at dealer. Otherwise this vehicle has been great and pushing 29mpg since we picked it up.
 
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